package cn.leftsite.juc.pattern.nio;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Objects;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * @author wangjinqiang
 * @date 2019-06-06
 */
public class MultiThreadEchoServer {
    private static ExecutorService tp = Executors.newCachedThreadPool();

    static class HandleMsg implements Runnable {
        Socket clientSocket;

        public HandleMsg(Socket clientSocket) {
            this.clientSocket = clientSocket;
        }

        @Override
        public void run() {

            try (BufferedReader is = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
                 PrintWriter os = new PrintWriter(clientSocket.getOutputStream(), true)
            ) {
                // 从 inputStream 中读取客户端发送的数据
                String inputLine = null;
                long b = System.currentTimeMillis();
                while ((inputLine = is.readLine()) != null) {
                    os.println(inputLine);
                }
                long e = System.currentTimeMillis();
                System.out.println("spend: " + (e - b) + "ms");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        ServerSocket echoServer = null;
        Socket clientSocket = null;

        try {
            echoServer = new ServerSocket(8000);
        } catch (IOException e) {
            e.printStackTrace();
        }

        while (true) {
            try {
                clientSocket = Objects.requireNonNull(echoServer).accept();
                System.out.println(clientSocket.getRemoteSocketAddress() + " connected");
                tp.execute(new HandleMsg(clientSocket));
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}
